IC-Lewis acid strengths application (2) Pyridine Compositions*

According to Mathew proposed[22]:IC Lewis acid strength of cations(Table 3)is relevant
to Mathew’s compositions in the order:

Fe3+(2.531)>Fe2+(1.952)>Co2+(1.199)>Cu2+(0.622)>Cu+(0.295)

When an organic molecule like electron donating pyridine adsorbs on the surface, cations get reduced due to charge transfer. Thus the easily
reducible metal ions like Cu2+ undergo fast reduction to Cu+ and hence the stability of metal ion-pyridine complex decreases. From the acid strength of various cations it is
clear that reduced Cu+ has very poor acidity. In other words, for a given ligand, corresponding stability constants of metal ions are in the order

Fe2+>Co2+>Cu2+

and hence the acidity of these ions also follow the same order, as shown earlier.”Table 3. shows that Pyridine
compositions are relevant to Zhang’s scales of Lewis acid strengths and the ICP.

The
Ionic power are the intention, the possessive and the expressiveinstinct originatedfrom the
ionization of the nuclear charge Z * . The covalent environment is the boundary condition and the nature laws of kinetic-potential energy conversion and conservation, originated

"The major difficulty in Pauling's EN is that the attraction for an electron is clearly not expected to be the same for different valencies of an
element". Zhang EN is in different valences and is therefore encompassed.byK. M. Mackay, R. A. Mackay and W. Henderson

An excellent review and resource of all that is inoganic chemistry。” L.
L. Pesterfield

The
Ionic poer are the intention, the possessive and the expressiveinstinct originatedfrom the
ionization of the nuclear charge Z * . The covalent environment is the boundary condition and the nature
laws of kinetic-potential energy conversion and conservation, originated